Air Velocity Mapping of Environmental Test Chambers

Abstract : The air velocity profile of the U.S. Army Research Institute of Environmental Medicine articulated manikin chamber was mapped using an anemometer tree system. It was found that the air velocity within the chamber was a disparate property. Air velocities were significantly different at different chamber fan speed settings, and at different heights in the chamber. Airflow patterns in such an environmental chamber are an inherent function of conventional chamber construction, but influenced by external factors such as equipment situated within the chamber. The practice of employing a single thermal or cup anemometer to monitor chamber air velocity is, in general, totally inadequate. (edc)